Rocio is a distinctive girls' name in United States, ranking #1273 in 2008 with 196 recorded births. The name reached its all-time peak in 1998 with 343 births ranking #673. Since 1996, the popularity has decreased by 40.1%. In 2008, approximately 1 in every 9,647 girls born was named Rocio. FALLING Recent data shows the name is currently falling.